A.is the SWL of the crane
B.are the SWL of the crane
C.the SWL of the crane is
D.the SWL of the crane are
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A.executed
B.located
C.fixed
D.measured
A.Electro-hydraulic units
B.Steam units
C.Independent internal combustion power units
D.All of the above
A.when the line pull reaches the rated winch capacity
B.after the line pull exceeds the rated winch capacity
C.after a short build-up of torque
D.immediately
A.Use one hand to give any motion signal，and place the other hand motionless in front of the hand giving the motion signa
B.Extend arm with the thumb pointing up，and flex the fingers in and out for as long as the load movement is desired
C.First tap your elbow with one hand and then proceed to use regular signals
D.First tap the top of your head with your fist and then proceed to use regular signals
A.Extend arm and point finger in the direction to move the boom
B.Extend arm with thumb pointing downward and flex fingers in and out
C.With forearm vertical and forefinger pointing up，move hand in small horizontal circles
D.With arm extended downwards and forefinger pointing down，move hand in small horizontal circles
最新試題
Which of the following statements is FALSE concerning cranes being installed on the centerline of vessels（）.
Pedestal cranes have limit switches to restrict movement of which function（s）（）.
When discharging an oil cargo，the first consideration is to（）.
Which statement is TRUE concerning the placard entitled Discharge of Oil Prohibited（）.
When using slings，cargo handlers should take all the following precautions except（）.
Sudden starts or stops of the boom is likely to cause all of the following except（）.
What is the purpose of the equalizing beam aboard a crane vessel（）.
What is/are the advantage（s）of cranes over conventional cargo booms（）.
Which operation may cause the pressure in an inert tank to fall below the prescribed limits（）.
Regulations concerning the stowage，lashing，and securing of timber deck cargoes aboard general cargo vessels may be found in the（）.